Part of the AI writing assistant guide
Hemingway App grades your sentences. AIWriteBook helps you write the book
Hemingway App, also called Hemingway Editor, is a readability checker. It colors the sentences that are hard to read, points at adverbs and passive voice, and gives your text a grade level. That is a sharp tool for tightening prose. Writing a book is a bigger job: a plan, chapters that hold together, an edit, a cover and publishing files. AIWriteBook is built for that whole job.
A readability meter and a book workshop
Hemingway measures the text you give it. AIWriteBook works on the book you are making. Both care about clear prose, but they answer different questions.
Hemingway's job
Show where your prose is hard to read
- Highlights hard sentences in yellow and the hardest in red
- Flags adverbs, passive voice and words with simpler alternatives
- Scores the text with a readability grade
- On Plus, rewrites flagged sentences with AI and checks grammar and tone
The question it answersIs this passage easy to read?
AIWriteBook's job
Write, edit and publish a book in your voice
- Plans the outline, chapters and characters
- Drafts each chapter from the plan and a sample of your own writing
- Edits with a chapter AI chat and a grammar and style check, each change yours to accept
- Formats the print PDF, EPUB and DOCX and designs the cover
The question it answersIs this book ready for readers?
What a readability score sees in fiction, and what it misses
Here is a short scene of the kind novelists write every day. The notes below describe what Hemingway's highlights would point at, and how a book-aware edit treats the same lines.
Draft
She walked slowly to the window, and the letter, which had been delivered that morning by a boy she did not recognize, was held so tightly in her hand that the paper had begun to tear along the fold she had made when she first read it, standing in the hallway, unable to move.
After an edit that keeps the scene
She crossed to the window. The letter had come that morning, carried by a boy she did not know, and she held it so tightly that the paper was tearing along the fold she had made when she first read it, standing in the hallway, unable to move.
- A readability checker marks the whole thing red: 54 words in a single sentence. It would also point at the adverb "slowly" and the passive "was held". Those flags are fair.
- What it cannot know is that the long second half is deliberate. The run-on is the character's shock. Cutting it into four tidy sentences would raise the score and lose the moment. Our note on show, don't tell covers this trade-off.
- In AIWriteBook you would ask the chapter AI chat to cut the adverb and the passive but keep the breathless sentence, then accept or reject each change it proposes. The edit knows the rest of the chapter, because it lives inside it.
- Reading level does matter for children's and middle-grade books, and Hemingway's grade is a decent quick check there. For the prose itself, the grammar and style check flags filler and repetition as optional suggestions rather than rules.
Hemingway App and AIWriteBook compared
| What matters | Hemingway App | AIWriteBook |
|---|---|---|
| What it measures | Readability grade, plus highlights for long sentences, adverbs, passive voice and complex words | Grammar, spelling, punctuation, style and word choice, each fix with a reason |
| Writes new text | Classic: no AI. Plus: AI rewrites of sentences, 5,000 or 10,000 a month | Drafts whole chapters from your outline, in the voice of your writing sample |
| Knows the rest of the book | Checks the text in the editor | Outline, characters and Story Bible feed every chapter and edit |
| Bringing a draft in | Paste text, or import a Word file | Import a .docx up to 200,000 words, with chapters detected and your style learned |
| Export | Word, PDF, HTML, Markdown and one-click WordPress publishing | Print PDF, EPUB, wrap cover and DOCX formatted for KDP |
| Cover and audiobook | Not mentioned on its site | Cover designer with 21 art styles and a whole-book audiobook with 25 voices |
Hemingway details from hemingwayapp.com, October 2026.
Where Hemingway App is the better pick
- A fast, visual read on how dense your prose is, with no account needed on the web editor.
- Blog posts, reports and web copy, where a low reading grade really is the goal, plus one-click WordPress publishing.
- A one-time desktop purchase that works offline, if you prefer software you own outright.
- Setting a target reading level for an audience, on the Plus plan.
Who should keep Hemingway
Bloggers, marketers and anyone writing short pieces for the web. Many authors also keep it around as a quick second look at a dense chapter, which works fine next to AIWriteBook.
Pricing, side by side
Hemingway sells a readability tool, with AI rewrites as an add-on tier. AIWriteBook sells the full book workflow, and the first chapter costs nothing.
Hemingway App
- Web editor: free to paste and check
- Hemingway Editor Classic desktop app: $19.99 one time, Mac or Windows
- Plus: $100 a year for 5,000 AI rewrites a month, or $150 a year for 10,000
- Plus comes with a 2-week free trial
AIWriteBook
- Free: plan the book and write your first chapter
- Plans from $12 a month, billed yearly
- One-time credit packs from $20 for 250 credits
- Grammar and style check included in Plus, Pro and Ultra
Hemingway App for books: questions
Is Hemingway App good for editing a novel?
It is useful for tightening prose: it shows long sentences, adverbs and passive voice at a glance. It does not judge plot, pacing or consistency across chapters, and a readability grade cannot tell a clumsy long sentence from a deliberate one, so treat its colors as prompts rather than rules.
What is a good Hemingway alternative for authors?
If you only want a readability score, other checkers do the same job. If you want to write and edit a book, AIWriteBook covers drafting from an outline, a grammar and style check with a reason for every fix, an AI chat for rewrites you accept one by one, and formatting for print and ebook.
Does Hemingway App write text with AI?
The Plus subscription adds AI sentence rewrites, 5,000 or 10,000 a month depending on the plan, plus grammar fixes and tone adjustments. The Classic desktop app has no AI features.
How do the prices compare?
Hemingway's web editor is free, the Classic desktop app is $19.99 once, and Plus costs $100 or $150 a year. AIWriteBook is free to start with your outline and first chapter, plans begin at $12 a month billed yearly, and packs start at $20.
Can I use Hemingway and AIWriteBook together?
Yes. Some authors paste a finished chapter into Hemingway for a quick density check, then make the actual changes in AIWriteBook, where the edit sees the whole book and every change can be rejected.
More for authors who edit hard
- The AI writing assistant guideEvery kind of AI writing tool for authors, sorted by the job it does.
- Purple prose, and how to fix itWhen rich description tips into overwriting, with examples.
- Word counterCheck chapter and book length against genre norms.
- AIWriteBook vs GrammarlyThe sentence checker most writers already have installed.
Let Hemingway grade the sentences. Write the book here
Start with the outline and first chapter free.
- Outline and first chapter free
- Import your .docx draft, up to 200,000 words
- Print PDF, EPUB, wrap cover and DOCX from one Generate
- One-time credit packs from $20, no subscription